Okay, there a theoretically two ways to connect to your PC104PFB card - I think.
You might be able to connect with the native Lookout object ProfibusDP_Applicom object (applicom.cbx). However, therefore you need to know how the native DP datamember like B0 or D0 (Standard descriptor)... maps on your device with MODULE0-IX0-0. I believe Applicom might have some documentation about (their) Profibus DP addressing and about the nameing for the ApplicomIO.
Applicom OnlineI would start as well just with the applicom tools (ReadWait/WriteWait) to see if you can write to the device's I/O.
This might help further as well:
Using an Applicom Profibus BoardAs you see this document explains the second way you could communicate. By using Applicoms OPC server you need in Lookout the OPCClient object. As I saw on the web ApplicomIO 2.2 could be used as OPC server and should be straight forward when you use Lookout's OPC client.
Hope this helps - let us know.
Roland